iTunes song is a good idea.
I feel we all use Bartender 3 because of how many apps decide they deserve a spot up there.
I think if the controls were in my hands, it could be a useful feature.
Again, I only really use Bartender 3 because 80% of the apps I run don't actually need to tell me they're running in the menubar.
I personally like my screens clean. If I can access the info using a swipe, thats fine.
(e.g. i DONT like it when people put the date and the time into the touchbar for some reason. Its already in the corner of the screen.. ?)
But since it seems to be a thing, why not have the ability to add some applescripts up there, weather, a finder action, a script that turns on and off the internet sharing? (I have one of this in my touchbar but i hold control to get it up)